these groups or big companies dominate south korea's economy. critics say they made it hard for smaller companies to succeed. moon has said one solution is to reintroduce limits on how conglomerates can invest. he says that would create room for smaller companies to grow. >> and what does park say? she's known to be more conservative. >> yeah. that's right. as far as these powerful groups of allied companies are concerned, park favors the strength to keep their growth in check. but she says they are large employers that play an important role in the economy. she says improving conditions for workers and supporting weak members of society are two of her goals. >> and of course north korea a key issue in south korean politics. what are the candidates' positions on pyongyang? >> yes. that's a big question. both want to see relations improve. moon favors a proactive approach. he has said he would send a mission to the north in the first year as president. he wants to hold summit talks with the north leader. the last time, it was five years ago. park